What were the first organisms to have sex? We may never know the answer, but as Bill Nye explains in this Big Think interview, scientists are very interested in why sexual activity remains so popular in nature...

Genetics Then & Now

The matriarch of modern cancer genetics on whether the type of career she had would be possible today: "No. I was doing observationally driven research. That’s the kiss of death if you’re looking for funding today. We’re so fixated now on hypothesis-driven research that if you do what I did, it would be called a “fishing expedition,” a bad thing. ...I keep saying that fishing is good. You’re fishing because you want to know what’s there." Without her 1970s finding that broken and translocated chromosomes were a factor in blood cancers, we might not have the treatments for leukemia that are commonplace today.